Processing of photographic film

A portable film processing unit comprising:

• loading means for receiving a film cassette containing undeveloped film;
• at least one processing chamber;
• at least one receptacle means for containing processing fluids;
• coupling means for coupling each receptacle means to each processing chamber;
• valve means for selectively permitting flow of processing fluids between each receptacle means and a respective one of the processing chambers;
• removal means for removing the film from its cassette and winding it onto a spiral type holder located in a processing chamber, the loading means, the removal means, and the processing chambers being housed in light-tight conditions;
• and
• pump means to facilitate the flow of processing fluid from the processing chamber to respective receptacle means, the arrangement being such that the processing fluids can be dispensed from the receptacle means to a selected one of the processing chambers to perform a processing operation on the film therein and, on completion of that processing operation, the fluid can be returned under the influence of the pump means to its respective receptacle means.